Search found 246 matches

by McKlaud
Tue Jan 23, 2018 9:48 pm
Forum: Development
Topic: ZX81 ULA-in-a-CPLD
Replies: 233
Views: 49100

Re: ZX81 ULA-in-a-CPLD

Unfortunately all pictures stored on PhotoBucket gone and no chance to see what was on them. :( Anyway, one of my ZX81s is dead and I decided to recreate the RetroTechie's implementation using XC9572XL. The prototype PCB on a breadboard under 13MHz generator test is in full flesh on the attached pho...
by McKlaud
Mon Jan 22, 2018 10:56 pm
Forum: Hardware
Topic: 2KB memory in a 1KB ZX81
Replies: 2
Views: 1016

Re: 2KB memory in a 1KB ZX81

NEC D4016D is 2KB (2048words x 8bits) Static RAM chip. You will not risk anything if you remove LK1 and put the LK2 in. 2KB was a standard in any TS1000. I would not be surprised if your board is one of Issue 3 boards but Sinclair was short with supplies to UK market and they used anything what they...
by McKlaud
Sun Jan 21, 2018 12:16 pm
Forum: Development
Topic: Help Wanted
Replies: 12
Views: 2206

Re: Help Wanted

Elecrow less than $10 for 5 units with delivery. The delivery time up to 14 days.
by McKlaud
Sat Jan 20, 2018 9:32 pm
Forum: Development
Topic: Help Wanted
Replies: 12
Views: 2206

Re: Help Wanted

Charles

See these
Image

I sure you will be able fit to the bottom one inside the Zeddy/Speccy.
by McKlaud
Sat Jan 20, 2018 9:04 pm
Forum: Development
Topic: Help Wanted
Replies: 12
Views: 2206

Re: Help Wanted

Ask Google for "ZX Spectrum BreadBoard" or "ZX Spectrum Extender" or "ZX-BUS expander".
by McKlaud
Fri Jan 19, 2018 10:09 pm
Forum: Development
Topic: Dodge development thread
Replies: 1
Views: 739

Re: Dodge development thread

Good luck! :)
by McKlaud
Wed Jan 17, 2018 11:39 pm
Forum: Hardware
Topic: zx spectrum in zx81 case
Replies: 63
Views: 15551

Re: zx spectrum in zx81 case

All gone :) Lucky guys are: Paul & 1024MAK :)
by McKlaud
Wed Jan 17, 2018 5:16 pm
Forum: Hardware
Topic: zx spectrum in zx81 case
Replies: 63
Views: 15551

Re: zx spectrum in zx81 case

Newer version of the ZX Max is alive.

Image

I have got two spare PCBs (one white and one blue). If anyone is interested in them, please feel free and send me a PM. Only one rule applies: "First come, first served."
by McKlaud
Fri Jan 12, 2018 12:01 am
Forum: Welcome Area
Topic: Hi from Austria
Replies: 4
Views: 1381

Re: Hi from Austria

Hi Robert.
by McKlaud
Thu Jan 11, 2018 9:03 pm
Forum: Development
Topic: old magazine article -- interesting ! ??
Replies: 16
Views: 3347

Re: old magazine article -- interesting ! ??

Interesting ...